CN219512308U

CN219512308U - Precise resistor shunt

Info

Publication number: CN219512308U
Application number: CN202320789784.5U
Authority: CN
Inventors: 徐恩慧
Original assignee: Simei Microelectronics Technology Suzhou Co ltd
Current assignee: Simei Microelectronics Technology Suzhou Co ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-08-11
Anticipated expiration: 2033-04-11

Abstract

The utility model relates to the technical field of current splitters, in particular to a precise resistor current splitter, which comprises two copper connecting pieces, wherein a manganese-nickel-copper alloy resistor piece is welded between the two copper connecting pieces, the tops of the two copper connecting pieces are in threaded connection with connecting terminals of a butt joint ammeter wiring nose, cylindrical through holes are penetrated in the two copper connecting pieces, bolts are slidably connected in the cylindrical through holes, nuts are in threaded connection with the tops of the bolts, blind grooves are formed in one ends of the bolts, which are close to the nuts, of the blind grooves, the peripheral surfaces of the bolts penetrate through one side of each blind groove, gaskets penetrated by the bolts are arranged between the nuts and the copper connecting pieces, two limit rods which are symmetrically distributed are fixedly connected to the top surfaces of the gaskets, and the limit rods can limit the U-shaped wiring nose in the horizontal direction; this shunt is through improving connecting terminal for this shunt can be applicable to the wiring nose of U type, O type and needle type, has improved application scope and situation, and the wiring nose is installed on the shunt after, is difficult for becoming flexible and drops.

Description

Precise resistor shunt

Technical Field

The utility model relates to the technical field of current dividers, in particular to a precise resistance current divider.

Background

The current divider is widely applied to the measuring current range of instruments, can be used for backflow, current limiting, current equalizing and sampling detection of communication systems, electronic complete machines, automatic control power supplies and the like, and has the main characteristics that a low resistor is provided with a manganese nickel copper alloy resistor piece, two endpoints for current meter connection and two copper connecting terminals.

In the prior art, the wiring nose commonly used by electrician has U type, O type and needle type, when being connected with connecting terminal, because the prior art adopts bolt and nut to press from both sides the wiring nose on copper connecting terminal, two wiring of U type wiring nose are laminating in bolt outer peripheral face both sides, needle type wiring nose is pasting in bolt outer peripheral face one side, O type is because run through the cover by the bolt on the bolt, so difficult not hard up dropping, but the friction force that produces when U type and needle type only can press from both sides through nut and connecting terminal prevents not hard up, when not putting the position or not screwing down enough tightly, have the problem of becoming flexible and dropping when being pulled.

The above information disclosed in the background section is only for enhancement of understanding of the background of the disclosure and therefore it may include information that does not form the prior art that is already known to a person of ordinary skill in the art.

Disclosure of Invention

The utility model aims to provide a precise resistor shunt, and designs a shunt which can be suitable for U-shaped, O-shaped and needle-shaped junction noses, and the junction noses are not easy to loose and fall off after the shunt is abutted with the junction noses, so that the defects in the technology are overcome.

In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a precision resistor shunt, includes two copper connecting pieces, and the welding has manganese nickel copper alloy resistance between two copper connecting pieces, and two copper connecting piece top threaded connection have the connecting terminal of butt joint ampere meter wiring nose, and two copper connecting pieces are inside to run through there is the cylinder through-hole, and sliding connection has the bolt in the cylinder through-hole, and bolt top threaded connection has the nut, the blind groove has been opened to bolt near nut one end, blind groove one side run through the outer peripheral face of bolt, place the spacer that is run through by the bolt between nut and the copper connecting piece, spacer top surface fixedly connected with two symmetrical distribution's gag lever post, the gag lever post can carry out spacing on the horizontal direction to the wiring nose of U-shaped, and gag lever post and blind groove are in the both sides of bolt respectively.

Preferably, one side of the blind groove and the central axis of the bolt are positioned on the same horizontal line, and the top end of the blind groove penetrates through the top of the bolt.

Preferably, the limiting rod is arranged in an arc shape, and the central axis of the arc-shaped limiting rod coincides with the central axis of the cylindrical through hole.

Preferably, a pressing sheet penetrated by a bolt is arranged between the gasket and the nut.

Preferably, the bottom surface of the copper connecting piece is provided with a hexagonal groove with the same cross section as the bolt, and the bolt is connected inside the hexagonal groove in a sliding way.

Preferably, when the gasket is placed on the copper connecting piece, the top surface of the gasket is higher than the bottom surface of the blind groove when the bolt is positioned in the hexagonal groove.

In the technical scheme, the utility model has the technical effects and advantages that:

1. when the needle-shaped wiring nose is required to be connected with the copper connecting piece, the needle-shaped wiring nose is inserted into the blind groove, then the nut is screwed down, the nut drives the pressing piece to be matched with the gasket to clamp the needle-shaped wiring nose, the position of the needle-shaped wiring nose when clamped is changed by using the changed bolt, the needle-shaped wiring nose is easy to place, and is not attached to the peripheral surface of the bolt like the prior art, so that the contact area is increased, the friction force is increased, and the needle-shaped wiring nose is difficult to loose and drop;

2. when the U-shaped wiring nose is required to be connected with the copper connecting piece, the U-shaped wiring nose is inserted into two sides of the outer peripheral surface of the bolt, so that the U-shaped wiring nose is far away from the blind groove, meanwhile, the U-shaped wiring nose is positioned between the two limiting rods, then the nut is screwed down, the nut drives the pressing piece to cooperate with the gasket to clamp the U-shaped wiring nose, at the moment, the U-shaped wiring nose is limited by the limiting rods and the shape of the nut on the horizontal plane, and is limited by the nut and the copper connecting piece in the vertical direction, so that the U-shaped wiring nose is stably limited as the O-shaped wiring nose, and the problem of loosening and falling is avoided;

3. this shunt is through improving connecting terminal for this shunt can be applicable to the wiring nose of U type, O type and needle type, has improved application scope and situation, and the wiring nose is installed on the shunt after, is difficult for becoming flexible and drops.

Drawings

For a clearer description of embodiments of the present utility model or technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a first split schematic of the present utility model;

FIG. 3 is a second split schematic of the present utility model;

fig. 4 is a cross-sectional view of a connection terminal of the present utility model.

Reference numerals illustrate:

1. a copper connector; 2. a manganese nickel copper alloy resistor; 3. a connection terminal; 4. a cylindrical through hole; 5. a bolt; 6. a nut; 7. a blind groove; 8. a gasket; 9. a limit rod; 10. tabletting; 11. hexagonal grooves.

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the technical solutions of the embodiments of the present utility model will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

Examples:

as shown in fig. 1-4, the welding circuit comprises two copper connecting pieces 1, a manganese nickel copper alloy resistor 2 is welded between the two copper connecting pieces 1, connecting terminals 3 for butting against a ammeter wiring nose are connected to the tops of the two copper connecting pieces 1 in a threaded manner, cylindrical through holes 4 are formed in the two copper connecting pieces 1 in a penetrating manner, bolts 5 are connected in the cylindrical through holes 4 in a sliding manner, nuts 6 are connected to the tops of the bolts 5 in a threaded manner, blind grooves 7 are formed in one ends, close to the nuts 6, of the bolts 5 in a penetrating manner, of the blind grooves 7, gaskets 8 penetrated by the bolts 5 are arranged between the nuts 6 and the copper connecting pieces 1, two limit rods 9 which are symmetrically distributed are fixedly connected to the top surfaces of the gaskets 8, the limit rods 9 can limit the U-shaped wiring noses in the horizontal direction, and the limit rods 9 and the blind grooves 7 are respectively positioned on two sides of the bolts 5;

when the needle-shaped wiring nose is required to be connected with the copper connecting piece 1, the bolt 5 passes through the cylindrical through hole 4 from top to bottom, then the gasket 8 is placed on the top of the copper connecting piece 1 and is penetrated by the bolt 5, then the needle-shaped wiring nose is inserted into the blind groove 7, then the nut 6 is screwed down, the needle-shaped wiring nose is clamped on the copper connecting piece 1 by the nut 6, the position of the needle-shaped wiring nose when being clamped is changed by using the changed bolt 5, and the needle-shaped wiring nose is not attached on the peripheral surface of the bolt 5 like the prior art, so that the contact area is increased, the friction force is increased, and the needle-shaped wiring nose is not easy to loosen and fall off;

when the U-shaped wiring nose is required to be connected with the copper connecting piece 1, firstly, the bolt 5 passes through the cylindrical through hole 4 from top to bottom, then the gasket 8 is placed at the top of the copper connecting piece 1 and is penetrated by the bolt 5, then the U-shaped wiring nose is inserted at two sides of the outer peripheral surface of the bolt 5, meanwhile, the U-shaped wiring nose is positioned between the two limiting rods 9, then the nut 6 is screwed, the U-shaped wiring nose is clamped on the copper connecting piece 1 by the nut 6, at the moment, the U-shaped wiring nose is limited by the limiting rods 9 and the shape of the U-shaped wiring nose, and the U-shaped wiring nose is limited by the nut 6 and the copper connecting piece 1 in the vertical direction, so that the U-shaped wiring nose is as stable and limited as the O-shaped wiring nose, and the problem of loose falling is avoided.

As shown in fig. 4, further, one side of the blind groove 7 is positioned on the same horizontal line with the central axis of the bolt 5, and the top end of the blind groove 7 penetrates through the top of the bolt 5;

through the top through bolt 5 top of blind groove 7, conveniently open a groove on bolt 5, through the positional relationship of blind groove 7 and bolt 5 axis, both guaranteed the area of contact of needle wiring, avoid the intensity of bolt 5 too low again.

As shown in fig. 4, further, the shape of the limiting rod 9 is circular arc, and the central axis of the circular arc limiting rod 9 coincides with the central axis of the cylindrical through hole 4;

through the restriction to gag lever post 9 position and shape for gag lever post 9 accords with the shape of U type wiring nose among the current product more, improves the laminating degree with U type wiring nose.

As shown in fig. 2-4, further, a pressing piece 10 penetrated by the bolt 5 is arranged between the gasket 8 and the nut 6;

by placing the press piece 10 in front of the tightening nut 6, the press piece 10 is in contact with the lug, and the nut 6 is in contact with the press piece 10, so that friction damage to the lug is avoided when the nut 6 is tightened.

Furthermore, the bottom surface of the copper connecting piece 1 is provided with a hexagonal groove 11 with the same section as the bolt 5, and the bolt 5 is connected in the hexagonal groove 11 in a sliding way;

the bolt 5 is limited through the hexagonal groove 11, so that when the wiring nose is clamped from the copper connecting piece 1 to the direction of the manganese-nickel-copper alloy resistor piece 2, if the wiring nose is in a needle shape, the blind groove 7 can be positioned on one side far away from the manganese-nickel-copper alloy resistor, and if the wiring nose is in a U shape, the blind groove 7 can be positioned on one side close to the manganese-nickel-copper alloy resistor, so that the contact surface between the wiring nose and the bolt 5 is enlarged.

As shown in fig. 2, further, when the gasket 8 is placed on the copper connecting piece 1, the top surface of the gasket 8 is higher than the bottom surface of the blind groove 7 when the bolt 5 is positioned in the hexagonal groove 11;

the lug is clamped through the gasket 8 and the pressing piece 10, so that the lug is prevented from being bent by the clamp when the top surface of the gasket 8 is short and the bottom surface of the blind groove 7 is positioned in the hexagonal groove 11 when the bolt 5 is positioned.

The implementation mode specifically comprises the following steps: when the needle-shaped wiring nose is required to be connected with the copper connecting piece 1, the needle-shaped wiring nose is inserted into the blind groove 7, then the nut 6 is screwed down, the nut 6 drives the pressing piece 10 to be matched with the gasket 8 to clamp the needle-shaped wiring nose, the contact area is increased, and meanwhile, the needle-shaped wiring nose is easy to place;

when needs are connected U type wiring nose and copper connecting piece 1, insert U type wiring nose in bolt 5 outer peripheral face both sides, make U type wiring nose keep away from blind groove 7, make U type wiring nose be located between two gag levers 9 simultaneously, afterwards screw up nut 6, nut 6 drives preforming 10 cooperation gasket 8 and presss from both sides tight with U type wiring nose, U type wiring nose is spacing by gag lever levers 9 and self shape on the horizontal plane this moment, it is spacing by nut 6 and copper connecting piece 1 in the vertical direction, thereby realize just like stable spacing with O type wiring nose, avoid taking place not hard up problem that drops.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

The last points to be described are: first, in the description of the present utility model, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

the previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model.

Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein;

finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. The utility model provides a precision resistor shunt, including two copper connecting pieces (1), the welding has manganese nickel copper alloy resistance spare (2) between two copper connecting pieces (1), two copper connecting pieces (1) top threaded connection has connecting terminal (3) of butt joint ampere meter wiring nose, two copper connecting pieces (1) inside are run through there is cylinder through-hole (4), sliding connection has bolt (5) in cylinder through-hole (4), bolt (5) top threaded connection has nut (6), its characterized in that: the utility model discloses a novel electric screw bolt, including nut (6), screw bolt (5), blind groove (7) are opened near nut (6) one end, and the outer peripheral face of blind groove (7) one side through bolt (5), gasket (8) by screw bolt (5) run through have been placed between nut (6) and copper connecting piece (1), gasket (8) top surface fixedly connected with two symmetrical distribution's gag lever post (9), and gag lever post (9) can carry out spacing on the horizontal direction to the wiring nose of U-shaped, and gag lever post (9) and blind groove (7) are in the both sides of screw bolt (5) respectively.

2. A precision resistor shunt according to claim 1, characterized in that: one side of the blind groove (7) and the central axis of the bolt (5) are positioned on the same horizontal line, and the top end of the blind groove (7) penetrates through the top of the bolt (5).

3. A precision resistor shunt according to claim 1, characterized in that: the limiting rod (9) is arranged in an arc shape, and the central axis of the arc-shaped limiting rod (9) coincides with the central axis of the cylindrical through hole (4).

4. A precision resistor shunt according to claim 1, characterized in that: a pressing sheet (10) penetrated by the bolt (5) is arranged between the gasket (8) and the nut (6).

5. A precision resistor shunt according to claim 1, characterized in that: the bottom surface of the copper connecting piece (1) is provided with a hexagonal groove (11) with the same cross section as the bolt (5), and the bolt (5) is slidably connected inside the hexagonal groove (11).

6. The precision resistor shunt of claim 4, wherein: when the gasket (8) is placed on the copper connecting piece (1), the top surface of the gasket (8) is higher than the bottom surface of the blind groove (7) when the bolt (5) is positioned in the hexagonal groove (11).